Development of shoulders and plumes in the frame of the interchange instability mechanism for plasmapause formation
Electric field effects
Electric field model
Plasma density distribution
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The mechanism of plasmapause formation based on interchange instability and a Kp-dependent magnetospheric electric field model, enables us to determine the position of the plasmapause as a function of Kp and local time. We illustrate here how this physical mechanism is able to account for the formation of shoulders like those observed by EUV on IMAGE. A wide variety of other structures observed by IMAGE like tails (also called plumes), and notches are also obtained with this mechanism for the formation of a "knee" in the high altitude cross-L distribution of the cold plasma density distribution.
CitationPierrard, V.; Lemaire, J.F. (2004). Development of shoulders and plumes in the frame of the interchange instability mechanism for plasmapause formation. , Geophysical Research Letters, Vol. 31, Issue 5, L05809, DOI: 10.1029/2003GL018919.